<template>
  <div class="login">
    <div class="login-border">
      <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
        <h3 class="title"><span style="font-size: 28px; font-weight: 700;">欢迎登录&nbsp;</span><span style="font-size: 20px; font-weight: 300;">区块链丝制品溯源平台</span></h3>
        <el-form-item class="el-form-item-common" prop="username">
          <el-input v-model="loginForm.username" type="text" auto-complete="off" placeholder="账号">
            <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
          </el-input>
        </el-form-item>
        <el-form-item class="el-form-item-common" prop="password">
          <el-input v-model="loginForm.password" type="password" auto-complete="off" placeholder="密码"
            @keyup.enter.native="handleLogin">
            <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
          </el-input>
        </el-form-item>
        <el-form-item class="el-form-item-common" prop="code">
          <el-input v-model="loginForm.code" auto-complete="off" placeholder="验证码" style="width: 63%"
            @keyup.enter.native="handleLogin">
            <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
          </el-input>
          <div class="login-code">
            <img :src="codeUrl" @click="getCode" class="login-code-img" />
          </div>
        </el-form-item>
        <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
        <el-form-item class="el-form-item-login" style="width:100%;">
          <el-button class="login-btn" :loading="loading" size="medium" type="primary" round
            @click.native.prevent="handleLogin">
            <span v-if="!loading">登 录</span>
            <span v-else>登 录 中...</span>
          </el-button>
        </el-form-item>
        <el-form-item class="el-form-item-tracing" style="width:100%;">
          <el-button class="tracing-btn" size="medium" type="success" round @click.native.prevent="roTrace">
            <span>消费者溯源</span>
          </el-button>
        </el-form-item>
      </el-form>
      <!--  底部  -->

      <el-dialog title="农产品溯源" :visible.sync="drawer" width="95%">
        <el-divider content-position="left">农产品溯源</el-divider>
        <div>
          <Trace></Trace>
        </div>

      </el-dialog>
    </div>
  </div>
</template>

<script>
import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt } from '@/utils/jsencrypt'
import Trace from './Trace.vue'
export default {
  name: "Login",
  data() {
    return {
      codeUrl: "",
      cookiePassword: "",
      loginForm: {
        username: "admin",
        password: "admin123",
        rememberMe: false,
        code: "",
        uuid: ""
      },
      loginRules: {
        username: [
          { required: true, trigger: "blur", message: "用户名不能为空" }
        ],
        password: [
          { required: true, trigger: "blur", message: "密码不能为空" }
        ],
        code: [{ required: true, trigger: "change", message: "验证码不能为空" }]
      },
      loading: false,
      redirect: undefined,
      drawer: false,
    };
  },
  components: {
    Trace
  },
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect;
      },
      immediate: true
    }
  },
  created() {
    this.getCode();
    this.getCookie();
  },
  methods: {
    roTrace() {
      this.drawer = true
    },

    getCode() {
      getCodeImg().then(res => {
        this.codeUrl = "data:image/gif;base64," + res.img;
        this.loginForm.uuid = res.uuid;
      });
    },
    getCookie() {
      const username = Cookies.get("username");
      const password = Cookies.get("password");
      const rememberMe = Cookies.get('rememberMe')
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password: password === undefined ? this.loginForm.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
      };
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true;
          if (this.loginForm.rememberMe) {
            Cookies.set("username", this.loginForm.username, { expires: 30 });
            Cookies.set("password", encrypt(this.loginForm.password), { expires: 30 });
            Cookies.set('rememberMe', this.loginForm.rememberMe, { expires: 30 });
          } else {
            Cookies.remove("username");
            Cookies.remove("password");
            Cookies.remove('rememberMe');
          }
          this.$store
            .dispatch("Login", this.loginForm)
            .then(() => {
              this.$router.push({ path: this.redirect || "/" });
            })
            .catch(() => {
              this.loading = false;
              this.getCode();
            });
        }
      });
    }
  }
};
</script>

<style rel="stylesheet/scss" lang="scss">
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url("../assets/tu/login-page-bg.png");
  background-size: cover;
  // background: linear-gradient(to right, rgb(175, 243, 216), rgb(172, 201, 248));
}

.login-border {
  width: 900px;
  height: 600px;
  background-image: url("../assets/tu/login-bg.png");
  background-size: 100%;
  border-radius: 100px 0px 100px 0px;
  border: 1px solid #aaa;
  box-shadow: 0px 0px 10px #aaa;
}

.title {
  margin: 40px auto 40px auto;
  text-align: center;
  color: #3c3c3c;
  font-weight: 200px;
}

.login-form {
  border-radius: 6px;
  // background: #eee;
  width: 400px;
  // height: 500px;
  padding: 25px 25px 5px 25px;
  position: relative;
  left: 50%;
  .el-input {
    height: 38px;

    input {
      height: 38px;
    }
  }
  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 2px;
  }
}
.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}
.login-code {
  width: 33%;
  height: 38px;
  float: right;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}

.login-code-img {
  height: 38px;
}

.el-form-item-common {
  margin: 40px auto;
}

.login-btn {
  width:100%;
  height: 40px;
  background: linear-gradient(to right, rgba(0, 72, 255, 0.7), rgb(119, 47, 253, 0.7));
  font-size: 16px;
  font-weight: 200;
}

.login-btn:hover {
  background: linear-gradient(to right, rgba(0, 72, 255, 0.8), rgb(119, 47, 253, 0.8));
  box-shadow: 0px 0px 20px #eee;
}

.tracing-btn {
  width:100%;
  height: 40px;
  background: linear-gradient(to right, rgba(84, 255, 187, 0.7), rgba(0, 72, 255, 0.7));
  font-size: 16px;
  font-weight: 200;
  border: 0px;
}

.tracing-btn:hover {
  background: linear-gradient(to right, rgba(84, 255, 187, 0.8), rgba(0, 72, 255, 0.8));
  box-shadow: 0px 0px 20px #eee;
}
</style>
